package com.tanhua.dubbo.api;


import com.tanhua.model.enums.CommentType;
import com.tanhua.model.mongo.Comment;
import com.tanhua.model.mongo.Movement;
import com.tanhua.model.mongo.Video;
import com.tanhua.model.vo.PageResult;
import org.apache.dubbo.config.annotation.DubboService;
import org.bson.types.ObjectId;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.FindAndModifyOptions;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;

import java.util.List;

@DubboService
public class CommentApiImpl implements CommentApi{

    @Autowired
    private MongoTemplate mongoTemplate;

    //发布评论
    @Override
    public Integer save(Comment comment) {
        //查询动态
        Movement movement = mongoTemplate.findById(comment.getPublishId(), Movement.class);
        //向comment对象设置被评论人属性
        if(movement != null){
            comment.setPublishUserId(movement.getUserId());
        }
        //保存到数据库
        mongoTemplate.save(comment);
        //更新动态表的对应字段
        Query query=Query.query(Criteria.where("id").is(comment.getPublishId()));
        Update update=new Update();
        if(comment.getCommentType()== CommentType.LIKE.getType()){
            update.inc("likeCount",1);
        }else if(comment.getCommentType() == CommentType.COMMENT.getType()){
            update.inc("commentCount",1);
        }else {
            update.inc("loveCount",1);
        }
        //设置更新参数
        FindAndModifyOptions options =new FindAndModifyOptions();
        options.returnNew(true);  //获取更新后的最新数据
        Movement modify = mongoTemplate.findAndModify(query, update, options, Movement.class);
        //获取最新的评论数量，并返回
        return modify.statisCount(comment.getCommentType() );
    }

    /**
     * 分页查询
     * @param movementId
     * @param commentType
     * @param page
     * @param pagesize
     * @return
     */
    @Override
    public List<Comment> findComments(String movementId, CommentType commentType, Integer page, Integer pagesize) {
        //构造查询条件
        Query query =Query.query(Criteria.where("publishId").is(new ObjectId(movementId)).and("commentType")
                .is(commentType.getType()))
                .skip((page-1)*pagesize)
                .limit(pagesize)
                .with(Sort.by(Sort.Order.desc("created")));

        return mongoTemplate.find(query, Comment.class);
    }


    //判断comment数据是否存在
    @Override
    public Boolean hasComment(String movementId, Long userId, CommentType commentType) {
        Criteria criteria=Criteria.where("userId").is(userId)
                .and("publishId").is(new ObjectId(movementId))
                .and("commentType").is(commentType.getType());
        Query query=Query.query(criteria);
        return mongoTemplate.exists(query, Comment.class);
    }

    //取消点赞-- 删除comment数据
    @Override
    public Integer delete(Comment comment) {
        //1、删除Comment表数据
        Criteria criteria = Criteria.where("userId").is(comment.getUserId())
                .and("publishId").is(comment.getPublishId())
                .and("commentType").is(comment.getCommentType());
        Query query = Query.query(criteria);
        mongoTemplate.remove(query,Comment.class);
        //2、修改动态表中的总数量
        Query movementQuery = Query.query(Criteria.where("id").is(comment.getPublishId()));
        Update update = new Update();
        if(comment.getCommentType() == CommentType.LIKE.getType()) {
            update.inc("likeCount",-1);
        }else if (comment.getCommentType() == CommentType.COMMENT.getType()){
            update.inc("commentCount",-1);
        }else {
            update.inc("loveCount",-1);
        }
        //设置更新参数
        FindAndModifyOptions options = new FindAndModifyOptions();
        options.returnNew(true) ;//获取更新后的最新数据
        Movement modify = mongoTemplate.findAndModify(movementQuery, update, options, Movement.class);
        //5、获取最新的评论数量，并返回
        return modify.statisCount(comment.getCommentType() );

    }
    //网页端 查询动态里的评论
    @Override
    public PageResult findCommentByPage(String publishId, CommentType comment, Integer page, Integer pagesize) {
        Query query = Query.query(Criteria.where("publishId").is(new ObjectId(publishId)).and("commentType").is(comment.getType()));
        long count = mongoTemplate.count(query, Comment.class);
        query.skip((page - 1) * pagesize).limit(pagesize).with(Sort.by(Sort.Order.desc("created")));
        List<Comment> comments = mongoTemplate.find(query, Comment.class);
        return new PageResult(page,pagesize,count,comments);
    }

    //对评论点赞
    @Override
    public Integer likeComment(String commentId) {
        Query query=Query.query(Criteria.where("_id").is(commentId));
        Update update=new Update();
        update.inc("likeCount",1);
        FindAndModifyOptions options= new FindAndModifyOptions();
        options.returnNew(true);
        Comment comment = mongoTemplate.findAndModify(query, update, options, Comment.class);
        return comment.getLikeCount();
    }

    //取消对评论点赞
    @Override
    public Integer dislikeComment(String commentId) {
        Query query = Query.query(Criteria.where("_id").is(commentId));
        Update update = new Update();
        update.inc("likeCount",-1);
        FindAndModifyOptions options = new FindAndModifyOptions();
        options.returnNew(true);
        Comment comment = mongoTemplate.findAndModify(query, update, options, Comment.class);
        return comment.getLikeCount();
    }

    //保存视频里的全部评论
    @Override
    public void saveVideoComments(Comment comment) {
        //设置发布人的id
        Video video = mongoTemplate.findById(comment.getPublishId(), Video.class);
        if(video!=null){
            comment.setPublishUserId(video.getUserId());
        }
        //保存
        mongoTemplate.save(comment);
        //评论数加1
        Update update = new Update();
        update.inc("commentCount",1);
        mongoTemplate.updateFirst(Query.query(Criteria.where("_id").is(video.getId())),update,Video.class);

    }

    //查询视频里的评论
    @Override
    public List<Comment> findCommentByVideoId(String id, CommentType comment, Integer page, Integer pagesize) {
        Query query = Query.query(Criteria.where("publishId").is(new ObjectId(id)).and("commentType").is(comment.getType()))
                .skip((page-1)*pagesize)
                .limit(pagesize)
                .with(Sort.by(Sort.Order.desc("created")));
        return mongoTemplate.find(query, Comment.class);
    }
}
